/Engine/Plugins/Online/OnlineSubsystemSteam/Source/Public/OnlinePingInterfaceSteam.h
Calculates the ping of this client using the given host's ping data obtained from GetHostPingData.
The ping value to the given host if it can be calculated, otherwise -1 on error.
int32 GetPingFromHostData ( const [FString](API\Runtime\Core\Containers\FString) & HostPingStr ) const